Preview – Seattle (1-1) at Denver (1-1)

While the Denver Broncos have settled on a starting quarterback for the 2011 season, the Seattle Seahawks come into Saturday’s matchup between the teams with a greater measure of uncertainty at the game’s most important position.

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The Seahawks didn’t seem to have a potential quarterback controversy on their hands when head coach Pete Carroll anointed offseason addition Tarvaris Jackson as the unquestioned No. 1 on the onset of camp. The choice doesn’t appear so clear-cut anymore, however, after the ex-Minnesota Viking struggled for a second straight week in last Saturday’s preseason encounter with his former team.

Jackson threw an early interception that was returned 64 yards for a touchdown by Marcus Sherels and had trouble consistently moving the offense during the first half of Seattle’s 20-7 home loss to the Vikings. The sixth-year pro managed just 75 yards in completing 11-of-21 attempts while failing to produce any points.

The 28-year-old also didn’t impress in limited duty in the Seahawks’ 24-17 win at San Diego to begin the preseason, amassing a mere 13 yards on 3-of-5 passing while taking a pair of sacks.

Charlie Whitehurst, who started twice for Seattle in its 2010 NFC West championship season, has performed better over the first two games, having made good on nearly 72 percent (28-of-39) of his throws for 212 yards and a touchdown and no interceptions. That’s led to speculation that the competition for the starting job remains open heading into the Seahawks’ Sept. 11 opener at San Francisco.

via NFL Preseason Preview – Seattle (1-1) at Denver (1-1) | Seattle Seahawks – The News Tribune.